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Pex through metal screed key
I’m about to layout my pex for radiant heat in my basement and my contractor decided not to saw cut for expansion joints after the pour. Instead they are using 3.5” metal expansion joints which have knockouts for Pex to run through. Do I need to try to sleeve the holes to protect the Pex? Or run the Pex under the metal? It will be zip tied to the wire mesh. I’m worried that being tied to the wire mesh and then having to come up 2” to run through the metal and then getting zip tied back down to the mesh could damage the Pex.